To stop or not to stop, that's the question: about persistence and mood of workaholics and work engaged employees.

Int J Behav Med 18(4):361-72 (2011) PMID 21373772

Although workaholics and work engaged employees both work long hours, they seem to have a different underlying motivation to do so. The mood as input model might offer an explanation for the difference in work persistence of these employees. This model suggests that the interplay of mood and "persistence rules" (enough and enjoyment rules) may lead to different kinds of persistence mechanisms.